3pcs/set 65 8 9 Bar OPV Springs Set Modification For Gaggia Classic Espresso Machines Stainless Steel Coffee Tools Features: *Pressure Regulation: The 3 Pcs 6.5 8 9 Bar OPV Springs Set is designed as an alternative to the factory-set over-pressure valve(OVP) of the for Gaggia Classic espresso machines. By replacing the onetime spring, it allows you to regulate the pressure to ensure optimal espresso extraction. *Optimal Extraction: The factory-set pressure of 15 bar in the for Gaggia Classic OVP might be too high for using a classic espresso portafilter basket. With these replacement springs, you can maintain an industry-standard 9 bar of pressure, which is for achieving the best extraction results. *Versatile Range: In addition to the 9 bar spring, this set also includes 6.5 bar and 8 bar springs. This allows you to experiment with different pressure profiles and tailor your espresso extraction to your personal preference. *Wide Compatibility: The self-assembly stainless springs in this set are compatible with all newer models of for Gaggia Classic coffee machines, specifically the models and onwards. This ensures that you can easily install these springs in your machine for enhanced pressure control. *Easy Installation: Replacing the springs in the over-pressure valve is a relatively simple task. With the step-by-step instructions provided, you can effortlessly replace the onetime spring with the desired weaker spring. Enjoy the convenience of adjusting the pressure according to your taste preferences. Specifications: *Part Name:OPV Springs Set *Material:Stainless Steel *Size:6.5 Bar, 8 Bar, 9 Bar *Color:Silver Package Content: 3x Springs Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. _x000D_ _x000D_